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在短距离内,低数据传输速率的光传输系统可使用塑料光纤,它的大芯径使耦合容易。当速度达到10Mb/s时,可用Siemens公司的SFH425红外二极管作光源;匹配的光接收机SFH551在一块基片上含有一只光电二极管和一只接收放大器。接收基片只有三个终端:地、电源正极和数据输出。接收机设计成直流耦合的,因此,能接收从直流到最大为10Mb/s的数据传输速率。 5FH 452确保在40ns通/断时间条件下高的数据传输速度。当波长为770nm时达到最大传输水平。
In the short distance, the optical transmission system of low data transmission rate can use plastic optical fiber, its large core diameter makes the coupling easy. When the speed reaches 10Mb / s, Siemens SFH425 infrared diode can be used as a light source; matching optical receiver SFH551 on a substrate containing a photodiode and a receiver amplifier. The receiving substrate has only three terminals: ground, positive supply and data output. The receiver is designed to be DC-coupled so it can receive data rates from DC up to 10Mb / s. The 5FH 452 ensures high data transfer rates at 40ns on / off times. When the wavelength of 770nm to reach the maximum transmission level.